/usr/lib/python2.7/dist-packages/glance_store/common/config.py is in python-glance-store 0.1.8-1.
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# Copyright 2011 OpenStack Foundation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
Routines for configuring Glance
"""
import logging
import logging.config
import logging.handlers
import os
from oslo.config import cfg
from paste import deploy
from glance.version import version_info as version
paste_deploy_opts = [
cfg.StrOpt('flavor',
help=_('Partial name of a pipeline in your paste configuration '
'file with the service name removed. For example, if '
'your paste section name is '
'[pipeline:glance-api-keystone] use the value '
'"keystone"')),
cfg.StrOpt('config_file',
help=_('Name of the paste configuration file.')),
]
image_format_opts = [
cfg.ListOpt('container_formats',
default=['ami', 'ari', 'aki', 'bare', 'ovf'],
help=_("Supported values for the 'container_format' "
"image attribute"),
deprecated_opts=[cfg.DeprecatedOpt('container_formats',
group='DEFAULT')]),
cfg.ListOpt('disk_formats',
default=['ami', 'ari', 'aki', 'vhd', 'vmdk', 'raw', 'qcow2',
'vdi', 'iso'],
help=_("Supported values for the 'disk_format' "
"image attribute"),
deprecated_opts=[cfg.DeprecatedOpt('disk_formats',
group='DEFAULT')]),
]
task_opts = [
cfg.IntOpt('task_time_to_live',
default=48,
help=_("Time in hours for which a task lives after, either "
"succeeding or failing"),
deprecated_opts=[cfg.DeprecatedOpt('task_time_to_live',
group='DEFAULT')]),
]
common_opts = [
cfg.BoolOpt('allow_additional_image_properties', default=True,
help=_('Whether to allow users to specify image properties '
'beyond what the image schema provides')),
cfg.IntOpt('image_member_quota', default=128,
help=_('Maximum number of image members per image. '
'Negative values evaluate to unlimited.')),
cfg.IntOpt('image_property_quota', default=128,
help=_('Maximum number of properties allowed on an image. '
'Negative values evaluate to unlimited.')),
cfg.IntOpt('image_tag_quota', default=128,
help=_('Maximum number of tags allowed on an image. '
'Negative values evaluate to unlimited.')),
cfg.IntOpt('image_location_quota', default=10,
help=_('Maximum number of locations allowed on an image. '
'Negative values evaluate to unlimited.')),
cfg.StrOpt('data_api', default='glance.db.sqlalchemy.api',
help=_('Python module path of data access API')),
cfg.IntOpt('limit_param_default', default=25,
help=_('Default value for the number of items returned by a '
'request if not specified explicitly in the request')),
cfg.IntOpt('api_limit_max', default=1000,
help=_('Maximum permissible number of items that could be '
'returned by a request')),
cfg.BoolOpt('show_image_direct_url', default=False,
help=_('Whether to include the backend image storage location '
'in image properties. Revealing storage location can '
'be a security risk, so use this setting with '
'caution!')),
cfg.BoolOpt('show_multiple_locations', default=False,
help=_('Whether to include the backend image locations '
'in image properties. Revealing storage location can '
'be a security risk, so use this setting with '
'caution! The overrides show_image_direct_url.')),
cfg.IntOpt('image_size_cap', default=1099511627776,
help=_("Maximum size of image a user can upload in bytes. "
"Defaults to 1099511627776 bytes (1 TB).")),
cfg.IntOpt('user_storage_quota', default=0,
help=_("Set a system wide quota for every user. This value is "
"the total number of bytes that a user can use across "
"all storage systems. A value of 0 means unlimited.")),
cfg.BoolOpt('enable_v1_api', default=True,
help=_("Deploy the v1 OpenStack Images API.")),
cfg.BoolOpt('enable_v2_api', default=True,
help=_("Deploy the v2 OpenStack Images API.")),
cfg.StrOpt('pydev_worker_debug_host', default=None,
help=_('The hostname/IP of the pydev process listening for '
'debug connections')),
cfg.IntOpt('pydev_worker_debug_port', default=5678,
help=_('The port on which a pydev process is listening for '
'connections.')),
cfg.StrOpt('metadata_encryption_key', secret=True,
help=_('Key used for encrypting sensitive metadata while '
'talking to the registry or database.')),
]
CONF = cfg.CONF
CONF.register_opts(paste_deploy_opts, group='paste_deploy')
CONF.register_opts(image_format_opts, group='image_format')
CONF.register_opts(task_opts, group='task')
CONF.register_opts(common_opts)
def parse_args(args=None, usage=None, default_config_files=None):
CONF(args=args,
project='glance',
version=version.cached_version_string(),
usage=usage,
default_config_files=default_config_files)
def parse_cache_args(args=None):
config_files = cfg.find_config_files(project='glance', prog='glance-cache')
parse_args(args=args, default_config_files=config_files)
def _get_deployment_flavor(flavor=None):
"""
Retrieve the paste_deploy.flavor config item, formatted appropriately
for appending to the application name.
:param flavor: if specified, use this setting rather than the
paste_deploy.flavor configuration setting
"""
if not flavor:
flavor = CONF.paste_deploy.flavor
return '' if not flavor else ('-' + flavor)
def _get_paste_config_path():
paste_suffix = '-paste.ini'
conf_suffix = '.conf'
if CONF.config_file:
# Assume paste config is in a paste.ini file corresponding
# to the last config file
path = CONF.config_file[-1].replace(conf_suffix, paste_suffix)
else:
path = CONF.prog + paste_suffix
return CONF.find_file(os.path.basename(path))
def _get_deployment_config_file():
"""
Retrieve the deployment_config_file config item, formatted as an
absolute pathname.
"""
path = CONF.paste_deploy.config_file
if not path:
path = _get_paste_config_path()
if not path:
msg = "Unable to locate paste config file for %s." % CONF.prog
raise RuntimeError(msg)
return os.path.abspath(path)
def load_paste_app(app_name, flavor=None, conf_file=None):
"""
Builds and returns a WSGI app from a paste config file.
We assume the last config file specified in the supplied ConfigOpts
object is the paste config file, if conf_file is None.
:param app_name: name of the application to load
:param flavor: name of the variant of the application to load
:param conf_file: path to the paste config file
:raises RuntimeError when config file cannot be located or application
cannot be loaded from config file
"""
# append the deployment flavor to the application name,
# in order to identify the appropriate paste pipeline
app_name += _get_deployment_flavor(flavor)
if not conf_file:
conf_file = _get_deployment_config_file()
try:
logger = logging.getLogger(__name__)
logger.debug(_("Loading %(app_name)s from %(conf_file)s"),
{'conf_file': conf_file, 'app_name': app_name})
app = deploy.loadapp("config:%s" % conf_file, name=app_name)
# Log the options used when starting if we're in debug mode...
if CONF.debug:
CONF.log_opt_values(logger, logging.DEBUG)
return app
except (LookupError, ImportError) as e:
msg = (_("Unable to load %(app_name)s from "
"configuration file %(conf_file)s."
"\nGot: %(e)r") % {'app_name': app_name,
'conf_file': conf_file,
'e': e})
logger.error(msg)
raise RuntimeError(msg)
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